| Brain-sur-l'Authion | |
| Arrondissement: | Angers |
| Canton: | Angers-7 |
| Insee: | 49042 |
| Postal Code: | 49800 |
| Commune: | Loire-Authion |
| Coordinates: | 47.4467°N -0.4094°W |
| Elevation M: | 21 |
| Elevation Min M: | 15 |
| Elevation Max M: | 43 |
| Area Km2: | 22.92 |
| Population: | 3373 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Brain-sur-l'Authion (in French pronounced as /bʁɛ̃ syʁ lotjɔ̃/) is a former commune in the Maine-et-Loire department in western France. On 1 January 2016, it was merged into the new commune of Loire-Authion.[2]